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kap26 [50]
3 years ago
7

Identify the property demonstrated by the equation.

Mathematics
1 answer:
Dima020 [189]3 years ago
4 0

option B is the correct answer friend.

it is distributive property

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on a map 2 inches equals 40 miles. if two cities are 15 miles apart what is the distinace between them on a map
alexandr402 [8]
On the map it’s 600 inches apart
4 0
2 years ago
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What is <br><br> 3x+2y=-13<br> 3x+4y=1
Zepler [3.9K]

Answer:

The values are

x = -25/9 = -2 7/9

y = 7/3 = 2 1/3

Step-by-step explanation:

3x + 2y = -13 --------eqn 1

3x + 4y = 1-------------eqn2

Using eqn 2 to get the value of y

3x + 4y = 1

4y = 1 - 3x

Dividing both sides by 4,to get y

4y/4 =( 1 -3x) / 4

y = (1 - 3x) / 4

Since we've gotten the value for y, substitute the value into eqn 1

3x + 2y = -13

3x + 2(3x - 1)/4 = -13

Opening the bracket

3x + (6x - 2)/4 = -13

LCM = 4

(12x + 6x - 2) / 4 = -13

18x - 2 / 4 = -13

Then we cross multiply

18x - 2 = -13 * 4

18x - 2 = - 52

18x = -52 + 2

18x = -50

Divide both sides by 18, to get the value of x

18x/18 = -50/18

x = -25/9

or x = -2 7/9

The value of x is now known, so let's go back to eqn 2

Substitute x = - 25/9

3x + 4y = 1

3(-25/9) + 4y = 1

Open the bracket

-75/9 + 4y = 1

Make y the subject of the formula

4y = 1 + 75/9

LCM = 9

4y = (9 + 75)/ 9

4y = 84/9

To get y, divide both sides by 4

4y/4 = 84/9 / 4/1

y =

Note : when division changes to multiplication, it always be in its reciprocal form

y = 84/9 / 1/4

y = 84 * 1 / 9 *4

y = 84/ 36

y = 7/3

Or

y = 2 1/3

4 0
3 years ago
8×25×23 strategies 4 grade
DerKrebs [107]
8×25=200
and 
200×23=4600

so 8×25×23=4600
4 0
3 years ago
Solve the following quadratic equation 3×^2-5=0
coldgirl [10]
ANSWER:

X= radical 15/3 , radical -15/3

Decimal form:

X=1.29099444
X=-1.29099444


MARK ME BRAINLIEST PLEASE
8 0
3 years ago
a sack of potatoes weighs 14 pound 9 ounces. after wendy makes potato salad for a picnis, the sack weighs 9 pounds 14 ounces. wh
olganol [36]
14 pounds 9 ounces = 233 ounces
9 pounds 14 ounces = 158 ounces

233-158=75 ounces=4 pounds 11 ounces


4 0
3 years ago
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